Nut-lock.



J. BL HOAGLAND. `NUT Loox. APPLICATION FILED HAY 9, 1908 Patented Jani, 1909.

JOHN B. HAGLANI), AOF ST. LOUIS, MISSOURI.

NU T-LO CK.

Specication of Letters Patent.

Patented Jan. 5, 1909-.

Application led Ha'y 9, 1908. Serial No. 431,953.

T 0 all whom it may concern:

Be it known that I, JOHN B. HOAGLAND, a citizen of the United States, residing .at St. Louis, in the county of St. Louis City and State of Missouri, have invented a new and useful Nut-Lock, of which the following is a specication. l

This invention relates to nut locks and has for its object to provide a sim le and convenient device for securely hol ing a nut on a bolt against loosening by vibration or from other causes.

Another object is to provide a key which will automatically form a seat in the thread of the bolt during the operation of inserting said key in position.

With these and otherv objects in view as will more fully hereinafter appear, the presv ent invention consists in certain novel details of structure and arrangement of parts hereinafter fully described illustrated in the accompanying drawings and more particularly pointed out in the appended claim it being understood that various changes in the form proportion, size and minor 'details of the device may be made without departing from the spirit or sacrificing any of the' advantages o the invention.

In the accompanying drawings, F1gure 1 -1s an elevation partly 1n sectlon'shomng a locking device constructed in accordance with theinvention. Fig. 2 is a erspective view of the locking plate vused in ig. 1. Fig.

3 is a erspective view of the locking key.

In t e construction of the device illustrated in Figs'.4 1 and Zan ordinary bolt 1 is provided with the usual head 2 and threaded shank 3.

On the threaded shank is adapted to be run a common form of nut 4, a loc ring plate preferably formed of a rectangular metallic plate is doubled upon itself forming the o posed legs 6 and 7. The leg 7 is provided wit a lug1 9 extending beyond the end 'of the leg 6, the function of which will presently appear. Through the legs 6 'and 7 and' adjacent the bending point 10 are formed registering openings 8 of a diameter sulicientto sli ly fit ,over the threaded shank 3 of the bolt.

key pin preferably formed of ainetallic4 bar and provided at one end with an enlarged head 11,- the shank 10 of the pin is'sliglitly tapered and terminates in a square end 12. In assembling the arts as shown in Fig. 1 the bolt is first inserte through the device which it is .intended to hold and the lockingplate placed in position on the threaded shank 3, The nut 4 is then run onto the shank 3 until its inner end abuts the outer leg 7 of the locking plate, the lug 9 on this leg of the locking plate is now bent over one ofthe faces of the nut and the key pin driven between the bending point 10 and the threads 3. It is designed to have the'opening between the threads 8 and bending point 10 of slightly less Width than the Width of the shank 10 of the key pin so that When the latter is driven home the square end 12 will remove portion of the thread 3 thus forming a seat which will serve to prevent the pin Working loose by vibration or rom other causes.

locking devicev ma be applied to most any form of nut and bo t now m use, and that the same can be readily unlocked when desired. The parts are simple in construction and comparatively inexpensive in manufacture, and may be used over and over againeither in vconnection with the same o'r a new lock and.

bolt.

What isclaimed is In a nut lock the combination of a bolt and` my own, I have hereto aiiiXed my signatureI l in the presence of two witnesses.

JOHN B. HOAGLAND.

Witnesses:

JOHN C. ALE'rr, WENDLIN ZoLK. 

